Camerata Wachsmuth and Springer, 1885

Głuchowski, Edward, Casier, Jean-Georges & Olempska, Ewa, 2006, Crinoid and ostracod succession within the Early-Middle Frasnian interval in the Wietrznia quarry, Holy Cross Mountains, Poland, Acta Palaeontologica Polonica 51 (4), pp. 695-706 : 697

Subclass Camerata Wachsmuth and Springer, 1885 Order Monobathrida Moore and Laudon, 1943

Family Platycrinitidae Austin and Austin, 1842 Platycrinites sp. ( Fig. 3A, B ).—The columnals are very small, elliptical with straight and smooth latus. The articular facet is commonly smooth and surrounded by a delicate furrow. The fulcrum is lacking or very weakly developed and composed of minute ridges and/or 2–3 marginal culmina on some specimens. The lumen is circular, medium−sized. Generally, the articulum resembles that of Platycrinites minimalis Głuchowski, 1980 described from Eifelian–Givetian Skały Beds of the Holy Cross Mountains ( Głuchowski 1980), but differs in having somewhat larger lumen and lacking concave bifascial fields.

Figures

Fig. 3. Early–Middle Frasnian crinoids from the Wietrznia Ie section, Holy Cross Mountains. A, B. Platycrinites sp. A. GIUS−4−404/2, sample Ie−66, articular facet with very weakly developed fulcrum. B. GIUS−4−404/3, sample Ie−66, articular facet with marginal culmina. C, D. Haplocrinites sp. C. GIUS−4−404/5, sample Ie−48, theca from A−ray side. D. GIUS−4−404/6, sample Ie−48, theca from E−ray side. E. Cupressocrinites sp., GIUS−4−404/8, sample Ie−19. F. Floricrinus sp., GIUS−4−404/6, sample Ie−66. G. Anthinocrinus wenjukowi Yeltyschewa in Yeltyschewa and Stukalina, 1977, GIUS−4−404/15, sample Ie−34. H. Marettocrinus kartzevae (Yeltyschewa and Dubatolova in Dubatolova and Yeltyschewa, 1961), GIUS−4−404/10, sample Ie−19.I. Laudonomphalus humilicarinatus (Yeltyschewa in Dubatolova and Yeltyschewa, 1961), GIUS−4−404/7, sample Ie−19. J. Kstutocrinus sp., GIUS−4−404//13, sample Ie−66. K. Schyschcatocrinus multiformis Głuchowski, 1993, GIUS−4−404/16, sample Ie−19. L. Schyschcatocrinus delicatus Głuchowski, 1993, GIUS−4−404/14, +